JPS60227302A - Light source for multifunctional dental therapy - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Modern dentistry requires various types of illumination and light curing, and these are currently generally provided separately by individual different lamps packaged as separate light sources. , thus requiring many separate pieces of equipment for use in dental treatment. It also requires high fees to maintain many treatment rooms, which are currently relatively uneconomical.
Therefore, the smaller the space for equipment use, the better because it can be easily accommodated in today's treatment rooms. The invention aims to make the desired lighting device smaller in size and at the same time more efficient and of improved quality.

For many years, it has been the practice of dentists to choose treatment rooms that face as far north as possible in order to obtain natural sunlight that is as close as possible to pure white light, i.e., light without hue. However, on cloudy days, rainy days, and other seasons, such efforts are in vain, and dentists are therefore forced to use artificial light from electrolytes, e.g.
Various attempts have been made to at least approximate pure white light with acceptable color temperatures such as 500''.

Dentists now require as close to pure white light as possible to be directed at dental targets to see things like the inside of the oral cavity; somewhat enhanced white light illumination suitable for shade matching artificial dentures to natural teeth; Light-curing light power illumination of a type capable of effectively curing photo-curing resins or plastics used in tooth restoration for various and various purposes;
and early polymerization of visible light curable resins or plastics used in various dental repairs, particularly for viewing dental targets without causing premature polymerization during the preparation and shaping of plastic material fillings and similar repair materials prior to curing. We are looking for a type of dental target lighting that can be done.

As mentioned above, standard illumination lights or lamps are currently available only as individual units. To our knowledge, non-curing types of lighting are not currently available.

In the prior art of general lighting, various attempts have been made to use a single light source to produce a variety of colors, for example for entertainment or stage use. A typical example of this type of lighting is ]9
U.S. Patent No. 2 by Leslie et al., dated August 2, 1952.
No. 606.477 and U.S. Pat. No. 8.179.791 to Mohr dated April 20, 1965.

January 1955] U.S. Patent No. 2.6 by Ross et al.
No. 99.536 shows a headlamp arrangement of a seed-head motor vehicle as a signaling means, in which a light source is fixed and a movable lens projects a swirling beam of light.

Research has also been conducted in which the beam from the light source is reflected towards and from a curved reflector to enhance the reflection and directed toward its final direction through an output window or lens. Hall Jr., U.S. Pat. No. 3,202,811.

Unlike the practices and structures in these cited prior art patents, the present invention utilizes a single light source as a light source, and further utilizes a series of light-modifying optical filters and associated components, which include multiple connections to the light source filament. The various types of dental applications for illumination and light curing mentioned above are detailed below, although at least most if not all of them are associated with voltage regulation). This can be achieved by a simple and relatively simple structure.

The present invention builds on the flexibility and convenience of commonly assigned U.S. Pat. This is the result of enlargement.

SUMMARY OF THE INVENTION Among the basic objects of the invention is to selectively position a turntable with respect to the light source, on which a limited number of light beam modification devices of a single stationary light source are formed, and to selectively position each modification device with respect to the light source. By rotating the potentiometer and its electronic control circuitry to be manually set to vary the voltage across the filament of the light source as required, a single device can accommodate the various dental irradiation requirements normally required. The main objective is to provide a multifunctional dental light source that can perform at least the majority as well as photocuring functions.

Concomitant with said purpose, further causing said single instrument to provide practically pure white light for selectively viewing dental targets, and applying voltage to said lamp filament by adjusting said potentiometer. By simply changing the shade to a white color with a high color temperature for a shade match, it slightly enhances the light, provides non-polymerizing illumination to find the dental material of the photosensitive material that will photopolymerize if care is not taken, and provides the necessary The purpose is to provide polymerizable light that can quickly polymerize photopolymerizable resins and plastics. Simple rotation of the turntable whereby the several light-modifying optics are supported in spaced relation produces the desired type of dental illumination and light curing function from a single light source. . Another object of the present invention is to provide a heat absorbing filter in the optical path of the light rays emanating from adjacent radial reflectors. The light beam is thereby blocked by a heat-absorbing filter, creating a relatively cold beam with attenuated infrared wavelengths. Less thermal stress is then exerted in the beam and on the modified optical filter when placed in front of the reflector of the lamp.

Yet another object of the invention is to provide a tungsten halogen lamp as a light source with a radiant reflector for producing a parallel beam of light, which can be selectively positioned in the light path from the lamp and the reflector therefor. providing one or more light filters. A beam-cutting plane mirror also separates the light beam into two separate beams sent through the optical filter, and reflects the beams in different directions to a spherical reflector installed on the opposite side of the lamp. and placed in a non-curing light beam. Since each split ray is separated, they reflect each ray forward and from the lamp towards and through a fixed transparent window in front. each split ray reflected from said spherical reflector intersects each other at a specific distance from said reflector;
At a location in front of the window it is mixed with other rays to provide a limited width and height illumination range.

The beam intersection exists over a range of distances from a dental target, such as the oral cavity, where dentists commonly place their illumination sources. One albumen of the double converging light beam is manipulated by the dentist 7,
This is because even if one ray is blocked by an arm, shoulder, hand, or head, one ray remains unobstructed and can be used for illumination purposes.

Yet another object of the invention is to provide a foundation movably mounted in relation to a dental treatment chair in a treatment room for the desired setting of the foundation in relation to a patient sitting in the chair;
The turntable is mounted with the beam-modifying optical filter and rotatably supported on the base for movement about an axis perpendicular to the base. and further includes radiant position maintenance means between the base of the sump and the turntable which securely supports a selective beam-modifying optical filter and an associated beam-splitting plane reflector in an adjacent treatable position of the lamp. It is to provide.

further comprising fixing and centrally mounting the lamp on one adjacent end of a base plate, preferably a plate, and fixing the spherical reflector adjacent to the side edge of the base plate and spaced from the opposite side of the lamp; It is an incidental object to the said object to install. The transparent window is then fixed to the opposite end of the base plate.

Furthermore, one of the objects of the invention is to accommodate all of the above-described elements in a housing fixed to the base plate. The base plate and housing are centrally supported on one end of a movably mounted arm, and an operating handle is attached to the base plate and housing to facilitate installing the base plate and enclosure as desired for dental purposes. mounted on the housing.

Another object of the present invention is that it can be operated selectively to vary the voltage on the filament of said lamp, such that it is desired to perform the function of various light-modifying optical filters operating in different wavelength ranges nanometers. Providing a potentiometer in the electrical circuit for the lamp. While the potentiometer is another means by which the turntable is rotated, manual operation is desired to perform the respective functions of a beam-modifying optical filter on the turntable and a resin curing device. It has a knob that can be operated by hand.

Yet another object of the present invention is to utilize optical filters and related structures to modify the illumination emitted from a light source, such as a tungsten halogen lamp.

A tungsten halogen lamp produces a white light of 4700" to 5100" for a typical examination of a dental target, approximately 5500° or 5400 to 5900'.
)(, reduce the white temperature to below 1667'', and remove the blue range of Nuvector from 400 to 500 nJ'r and use the same one with a filter that allows wavelengths above 500 nm to pass through the optical filter. to make the desired various Kelvin ranges, respectively, and it shows the polymerization of visible light polymerizable resins and glasstics that are not affected by light.However, from 500 to 71
The 5 nm light beam is unobstructed for inspection purposes and provides sufficient illumination of the location and dental material restoration structure.

These and other objects are set forth in the accompanying drawings, which provide a detailed description of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It is deemed desirable to set forth certain definitions and criteria regarding the present invention as follows.

Photometric power is measured visually and is expressed in 1 ft.

Radiometric power is the actual power given by a light source and is expressed in Watts 1d.

/L' (nm) is the unit of length of one frequency, which is equal to one billionth of a meter or 10 meters.

Lumen (Lm) is a unit of luminous flux.

What is footcand/L/(FO)?
It is a unit of illumination equal to t.

Lux (LX) is a unit of illuminance equal to 1/I/-mend.

Kelvin (Kl = -273.) is a temperature unit equal to the magnitude for 1C based on the absolute temperature scale of 5U.

Wavelength is the distance between two consecutive points of a periodic wave in the direction of one lobogation of the light beam.

Hue determines whether a color is perceived as red, orange, yellow, green, blue, or violet without considering attributes of the light source or other aspects such as saturation and lightness.

According to the invention, the light source is preferably caused by an electric current connected to a tungsten halogen lamp with a radiation reflector. However, other types of lamps may be used, such as various arc-type lamps that produce an acceptable optical spectrum. One particular selected tungsten halogen lamp, which has been found to have a high success rate, can be operated at as low as 3400'. However, this is exemplary and not limiting. However, it was used as a reference for the purpose of illustrating at least one example of the invention. The various lights or illuminations contemplated to be produced by such lamps require the use of special optical fluorophores to achieve the objectives of the invention for various dental illumination and photocurable purposes. In order to produce a relatively cool light beam of the inventive multifunctional lighting system, the heat absorbing fin letter is preferably placed close to the front of the lamp reflector in the light beam. In this excerpt, all other optical filters are interference filters that pass or reject certain wavelengths of light as intended and desired. These optical filters consist of several layers of materials chosen for their known refractive index, laminated, for example, in a vacuum deposition chamber and coated with a suitable support pressure. Such optical filters adapt the spectrum of light rays passing through them by special passage or rejection of light rays of various wavelengths to desired parts or sections of the optical spectrum.

Light rays also have color temperature units expressed as K or Kelvin. Regarding the present invention, an optical filter for producing substantially pure white light of a common illumination reservoir for dental purposes from a relevant lamp reflector according to a certain group of color temperature ranges is 4700. It has a color temperature of "K~510o"h and a wavelength range of 400~715nm, producing a light beam in which the blue, green, and red wavelength ranges are harmonized to create pure white light.

For shade matching of artificial teeth with natural teeth, this temperature is raised to approximately 5500"K, which is reached by increasing the voltage above the normal illumination range supplied to Lang's filament, which is 5400"K. ~5900″
It has an adjustable range of. Therefore, for illumination and observation of dental purposes requiring exposure of photocurable resins or plastics to light that does not activate the material, filters that produce light with a color temperature of 1667 or less are used. However, the filter is 40
It does not take into account the wavelength range from 0 to 500 nm, but is necessary to inspect the target and place the observed light-sensitive material, such as a visible light-curable filling material or denture base resin or plastic. The light beam is kept in the wavelength range of 500 to 715 nm, which allows for the creation of fine structures.

Such rays are in the yellow-light region of the spectrum.

For curing photosensitive resins and plastics, the present invention uses a light-curing heat-reflecting bandpass filter that can be installed on the opposite side of the lamp's radiation reflector and mainly in the wavelength range 400-50.
It has a color temperature below 1667"K with its luminous flux within 0 nm and includes a heat-absorbing filter that rejects the light rays in the wavelength range 500-7]5 nm. The fixedly mounted condenser cone is photocurable. When desired, an external supplementary cone is often used.

In making an illumination of the above type, another preferred object of the present invention for photocuring purposes is to direct the light beam from a cylindrical, moderately sized device between the dental target and the light source.
It is to project between ~3 inches.

Yet another object of the present invention is to provide a safe and secure means for the patient, especially when relatively intense photocuring energy is directed at the patient. This is done when the turn-chip pool is rotated to place the light curing light cone in a working position with respect to said lamp, thereby being present in the circuit for the light source lamp in the form of a switch, said switch being an additional external light concentrator. When the cone is manually placed into the main or internal condenser cone, it is opened to energize the lamp. During such operations, the light from the lamp cannot shine into the patient's eyes.

As an auxiliary to said purpose, the circuit for the lamp also includes an additional switch, preferably a pushbutton, which is readily activated to restore current to the lamp when the external supplementary cone is effectively attached to the internal main cone. including. In addition, limited duration timers still exist in the lamp circuit, such as the ability to cut current from the rung after a preset period of time, such as automatically limiting exposure by a photocuring beam after 10 seconds. have. However, the pushbutton switch may be actuated repeatedly to provide as much light curing as desired.

Although exemplary physical parameters of the lighting device of the present invention have been set forth in Section 2, it is understood that the stated criteria may be varied within a reasonable range without departing from the spirit of the invention. Should. A clear description of the physical device using said criteria is provided below.

1-3 of the apparatus drawings, it is contemplated that the multifunctional dental treatment light source comprising the present invention will be supported on the outer end of a suitable arm 10 extending from either the wall, ceiling, or postbedenutal of the workroom. ing. It will be appreciated, although not visible, that the U-shaped member [2] is connected to the outer end of the arm 10 by a swivel 14, and that the power supply cord is placed within the conduit 16 and extends from the power line source. The arm is mounted inside the light head housing 18, which preferably comprises an upper section 20 and a lower section 22, removably connected to suitable electrical thermal breakers, current limiting switches and disconnect switches and their wiring. , swivel 14 and U-shaped member 12 are suitably positioned within the extending conduit in a conventional manner. The opposite side of the housing 18 is connected to the member 12 by a pivot 24.
connected to the outer end of the

Sections 20 and 22 of housing 18 are preferably molded from a suitable hard plastic material for durability and to provide electrical insulation properties. Additionally, the manually connectable hand/l/26 can be used for the purpose of pivoting the housing to any desired position or location for the purpose of applying a photocurable beam or illumination to a dental target, such as a patient's oral cavity or teeth. Extending from opposite sides of each housing 18. pivot 24
It will be appreciated that the swivel 4 has sufficient friction to maintain the desired position or location of the housing 18 after the same is fitted to the work site.

With particular reference to FIG. 3, a description of the contents of the housing 18 is set forth below. In the mI diagram, section 1' of the housing
It will be seen that there is a base plate 28 which is preferably a plate substantially parallel to the intersecting line of 20 and 21. The base plate is preferably a metal such as aluminum, and may be anodized black or colored. multiple posts 30
are visible and shown in dotted lines in FIG. 1 on substantially opposite sides of the base plate, but extend perpendicularly in opposite directions from the base plate 28 as seen in FIG. 9 which better shows the posts 30.

The upper portion 32 of the post is smaller in diameter and extends into a suitable hole in the base plate. The lower part of the upper part 32 is threaded to receive a fixing nut 34, which has a slightly larger diameter than the upper part of said part, and has a slightly larger diameter than the upper part of said part. These parts that receive the nut 34 complete this without passing the entire section 32 through. post 3
0 and the outer end of the upper part 32 is the upper part 20 of the housing]8.
and have threaded holes extending thereon for the purpose of receiving connecting screws 38 extending through the post 40 shown in FIG. 1 on the interior of the lower portion 22. From FIG. 3 it can be seen that at each corner of the base plate 28 there are 4 of 4 adjacent composite posts 30.86, which are connected to the upper 20 and lower 22 of the housing 18.
You will also understand that we form an institution that holds together the

On the front wall of the housing 18 is a transparent window spring /l/42, shown in vertical elevation in FIG. 2K, at the front of the housing 18 and a bezel 44 surrounding it. The bezel is shown in Figure 2.
．． There is a continuous groove 46 extending into it, best visible at 3, said groove receiving the edge of the transparent window panel for the purpose of securing it at the work site. The panel has a small opening or hole 48 near the top, in the center between the opposite sides, through which the photocuring light can pass when it is opened. Details about it are mentioned below. However, aperture 48 is normally closed except when the outer collection cone is attached to the main inner cone. Thereby, its effect is utilized to activate photocurable resins and the like when 26 aligned with said aperture. Closing of the opening 48 is effectively effected by a closure in the form of a plate 50 attached with an axle pin shown diagrammatically in FIG. 3 at the bottom of FIG. The closure 50 is supported on a pivot bolt 52. A pin 54 attached thereto for operating the closure projects from the opening 48 as clearly shown in FIG. That it proves suitable for manual coupling is shown in another way in FIG. The closure 50 is held open in a yieldable manner by a return spring 56. Window springs A/42 at their respective opposite upper corners are provided associated with transparent window portions 58, which window panels 42 could otherwise be made opaque by painting the inside surface or otherwise making them opaque. The lower opposite corner of the window spring/L/40 is also provided with a hole through which the pushbutton 60 and potentiometer shaft extend.

The base plate 28 supports many of the components within the housing 8, particularly the turnchie/l/64 shown in the diagram of FIG.

The manner in which the turntable is supported by the base plate 28 is most clearly shown in FIG. 3 and 10, the base plate has a preferably circular aperture 66 to which is suitably attached a threaded, preferably circular insulating insert 68 by spaced screws 70, as best seen in FIGS. Supplied with accessories.

Rotatable shaft 72 extends through a central opening in insulating member 68. A vertically disposed portion of the shaft 72 includes an axially aligned upper plush member 74 and a lower plush member 7.
It extends through 6. Upper plush member 74 has a circular flange 78 intermediate the end face, and lower plush member 76 has only a lower circular flange 80.

An anti-friction bearing 84 is disposed between the upper surface of the insulating member 68 and the flange 78. In assembling the arrangement shown in FIG. 0, the transverse pin 86 extends through the upper bushing member 76 and the lower portion of the shaft 72 and is of such length that it does not collide with the anti-friction bearing 82. The bearing 82 is then inserted into the upper bushing member 74 and the shaft is extended through the hole 88 in the insulating member 68. The lower antifriction bearing 84 and lower bushing member 76 are then mounted on the shaft, followed by the tightening collar 90 on the shaft. The lower part of the shaft 72 also has a short side formed on one of them for connection by a set screw 95 screwed radially into the clamping collar 90. To tighten the assembly, a nut, not visible, is screwed onto the lower threaded end 94 of the shaft 72, and then a set screw 95, not visible, is screwed onto the lower threaded end 94 of the shaft 72, and then the set screw 95, not visible, is screwed onto the lower threaded end 94 of the shaft 72. After the nut is removed, it is threaded through flat #i section 92 to hold the ascending V- in the working position.

The shaft 72 is located at the bottom 2 of the housing J8 as shown in FIG.
2, with a rotatable knob 98 secured to the manually connectable stem end. Said arrangement is on the turn tape /l/64 associated with the light source for the purpose of locating a plurality of different light beam generating devices.
Zhou (attached to the well. I will tell him the details.

Base plate 28 is shown in detail in FIG. 9 and is fixedly mounted within housing 18 as described above. receiving a base plate 104 of a preferably tungsten-halogen lamp 106 with a radiation reflector to create a columnar beam;
The lamp housing 1oo, which is provided with a supporting insulating base insert 102, is also fixedly attached to said base plate. The housing 100 has a pair of ears 08 screwed to the base plate 28, as shown clearly in FIG. Paired wires 10, which are part of an electrical cord 16, are connected to an insulated base insert 102.

The front part of the lamp housing 00 has an aperture through which the columnar beam from the radiation reflector of the rande 106 is created;
A heat absorbing filter 112 extends through the opening.

Additionally, a forced air cooling fan device 114 is mounted on the lower surface of the fixed base plate 28, as shown in dotted lines in FIG. supported adjacent to the opening of the The device blows ambient room air directly through the housing 〈00, drawing the air into it through the looper 118 in the lower part 22 of the housing and expelling it through the looper 118 in the upper part 20 of the housing 〉8. A fan 116 is included. cooling fan J14
The motors of are connected in the line shown in FIG. The details will be described later.

A very important feature of the present invention, as generally stated in the OBJECTS OF THE INVENTION section, is a turntable 64 (the attachment of which has already been described), as well as a group of light beam modifying elements; are supported for rotation therewith on a turntable, each 4 being placed in one of three operating positions with respect to a fixed light source 106, said light source preferably being a tungsten halogen lamp, but optionally 1c. Other lamps that are suitable and have the ability to create a more suitable light nuvector can also be substituted. However, by practical experimentation it has been discovered that the special type of lamp mentioned above is perfectly suited for all the purposes to which the present invention is directed. Also, as mentioned above, there are three types of light that can be produced by the present invention by (11) pure white illumination without hue, (2) non-curing illumination, and (3) some kind of individual filter that each produces a light curing power. There are major types of rays.

FIG. 3 shows that the base plate 28 supports a spring-actuated positioning device 120 that removably engages a shallow recess 122 around the turntable 64 for precise positioning of the various photoaltering chemical elements. You will understand. The first beam-modifying optical element or synutem is lamp 1
06 and a vertical frame 124 supporting a vertical filter 126 adapted to produce a pure white plain illumination beam without any hue from an adjacent reflector. Opposite the frame 124 is a similar vertical frame 128 supporting an uncured filter 129. When the rays from filters 126 and 129 are placed axially in line adjacent to each of the four rungs 106, the rays 126 and 129 pass through the ray diode, which is secured by a protruding bracket to which screws 134 secure the bracket to the turnchie. Biter 1
30.132 or by arranging reflective plane mirrors at corners. A set of such mirrors 130 and 182 each have a filter 126, ]2
Provided on 9th. A diametrically extending beam reflecting device consisting of a frustoconical collection cone member 136 is mounted between the paired mirrors or members 130. Member 13
The light exit end 138 of 6 is a heat reflective bandpass filter 14 whose purpose is to reshape the optical spectrum of the photocuring light after the columnar light passes through the heat absorption filter 112.
3 is smaller than the working light receiving end that exists adjacent lamp 106 as shown in FIG.

Looking at the normal illumination ray diagram 4, the filter 126 is aligned with the tungsten halogen lamp 106 and the heat absorption filter 11
It is located adjacent to 2. 3, a pair of spherical reflectors 144, 146 are shown adjacent to the rear end of the foundation at a slight angle. These were adjusted to receive split beams of light from planes *]30 and 132 which alternately reflected light forward from the transparent window portion 58 of the front plate J42. The light rays reflected from the spherical reflectors 144 and 146 are shown in Figure 4.
Some run almost parallel to each other and apart, as shown in Figure 1, while others intersect each other at a limited distance, as shown in the figure. The result is that the column of normal illumination, consisting of pure white light, is approximately 4 inches high and 8 inches wide at a distance of approximately 24 to 3 inches from the dental target.
A suitable area lying in the range of 48 inches can be spread out. However, such characteristics are primarily exemplary rather than restrictive.

The produced light beam will have a pure white property with no hue due to the property r of the filter 126. As a more specific example, assume that the color temperature of lamp 106 is approximately 3000"; that filter 126 is approximately 4700-5100";
It has a color temperature within the range of
It is nm. The same type of white light is also preferred for shade matching artificial teeth with natural teeth, or any other colorimetric desired, but preferably such light is approximately 5500" It should have a high color temperature of . This is also created by the optical filter 126, but the voltage to the lamp 06 is increased by operating the knob 62 connected to the potentiometer 50. FIG. reference.

Non-curing Illumination FIG. 5 concerns a non-curing illumination beam in which the turntable is rotated to position optical filter 129 on the opposite side of lamp 106 to produce this. There it will be held by one of the recesses 122 in the turntable connecting the spring-loaded pole detent of the positioner 120. The optical filter 129 has four
00-500 nm, whereby the resulting non-curing light is in the blue range of the visible spectrum;
This differs from the optical filter 126, which is intended to reject light rays that are not present in the light rays produced by lamps that cannot polymerize photopolymerizable plastics. However, the optical filter can also be used to view the photocurable material without activating it, such as when it is placed, shaped, and characterized within a tooth.
It can pass light of nm.

500-7] The passage of a 50 m beam is suitable for such illumination and inspection purposes and lies in the yellow-red range of the visible Nuvector.

Description regarding FIG. 4 (with respect to C) the light rays are created by the radiation reflector of the lamp 106, the filter 129 projects in front both the parallel rays and the rays that intersect within a limited range and finally as described with respect to the optical filter 126 of FIG. A spherical reflector that creates an illumination range 148 within the defined range] 44.1
46.

When light curing functionality is to be provided by the present invention, the turntable 64 is the main condensing cone member inside the larger light inlet end adjacent to the lamp 106 and the opening in the window panel 42. 48 is rotated to the position shown in FIG. The condensing primary cone member 136 is normally not activated in the condition shown in FIG.
must have a collection cone member 52 attached to the supplementary outer surface shown in FIG. It can be attached by stakes or other methods. With reference to FIG. 3, the support 154 has a turnchip /l/
64 and a heat reflection bandpass filter 140.
In addition to supporting the larger inner end of the primary condenser cone member, the small end] 38 is supported by a bracket 156 and the turnchie zl/ as shown clearly in the lower part of FIG. ] 64 with screws.

Preferably, the interior of collection cone member 136 has a highly specularly reflective surface, which may conveniently consist of, for example, a well-polished electrowhitened aluminum inner liner.

Yet such a liner also lines the inner wall of a supplementary outer condenser cone member 152 which, during operation, is extended through a small opening 48 in the window panel 42 and then passes through the inner cone member 152. Attached to the small end 138 of 136. Columnization of a considerable amount of the rays from the reflector of lamp 106 is caused by the rays emitted from the emission end of supplementary outer cone cone member 52 which deviates from the optical axis by only a limited range of approximately -+: JO°. arise. As a result, greater transmission of the photocuring light into the photopolymerizable or photocurable plastic additive is provided. A low beam exit angle is desirable for activating the beam and thereby providing a very deep and rigid dental filling side of cure. During normal functioning,
The tip or outer end 158 is placed relatively close to an existing dental target such that it can be activated by light energy emanating therefrom.

When the turntable is placed in the position shown in FIG. The intense light emanating from the internal primary cone member 136 is very bright and presents a safety issue if directed toward the patient's face when positioned for the purpose of fixation thereto. death,
It would be very inconvenient for the patient as well. To avoid such a situation, the present invention provides for the actuation finger 162 to be connected by a camming roller shown adjacent to the actuating finger 162 in FIG. ] I am thinking of using 60. When the turntable 64 is rotated, for example from any position shown in FIG. 4.5 to the position shown in FIG. It will be appreciated that the lamp 106 is isolated from the power circuit so that no light is emitted from the open end 138 of the lamp 186.

A supplemental outer cone member 352 is mounted over member 136 as shown in FIG.
06 is actuated by a pushbutton 60 to restore current to the light emitting end 15 of the external condenser cone member 52.
A timer motor is also activated for the purpose of creating a light beam 168 with photocuring properties emanating from 8. The switch +66 is also shown schematically in the circuit diagram of FIG. The arrangement is for safety purposes as well as patient reassurance.

To limit the exposure of the light beam to the tissue, the present invention also utilizes a timer 70, as shown diagrammatically in FIG. I'm also thinking. The timer 170 is also shown in dotted lines in FIG. 3 adjacent to the spherical reflector 184, and said timer is preferably set to a preferred time, e.g. 10 seconds or so-called dose time, which is believed to ensure manufacturing safety and efficacy. It can also be of any type that is set for a certain amount of time. If additional curing is desired at the end of such period of time, pushbutton 60 of switch 166 need only be pressed once more.

If you look at FIG. 6, II, especially FIG. 6, there is a branching light section! ]
68 is shown and further types of light emission can be produced by the beam. For example, in Fig. 12, the external light reflecting cone member] 52 is connected to or attached to the
A highly reflective sleeve is shown stopping at the front enhanced reflection point 180 shown in the cross-sectional view of FIG. 13 as seen in the IR-18 of No. 2. Such a configuration under certain circumstances creates a mode of beam concentration and direction that may be desirable for photocuring of certain types of photocurable materials in locations with difficult access to the oral cavity, such as posterior teeth. give. .

Still referring to FIG. 4, the outer end of the member 15 provided with a quartz, planar, or fiber optic light tube 82 may preferably be present in solid or fibrous form and may be attached to the outer end of the outer cone member 152. Light tube 1 has one end connected to the device, and the light beam from there
The light emitting end of 82] is directed from 84 and is found to be particularly effective for intraoral photocurable materials, such as photoactivated fillers or paints placed in the posterior region of the oral cavity. Will.

The printed circuit shown in FIG. 7 also includes a printed circuit board 186, and although details are not shown, the lamp 106
adjusting the voltage to the lamp 106 smoothly starting the current to the lamp 106, such as on the order of a few seconds to extend lamp life, maintaining a constant voltage to the lamp filament despite power line fluctuations; Condenser cone member 36 and 152 are lamps for delivery of the light beam to the target; lamps for light curing in particular, as well as all the power line voltage fluctuations mentioned above, such as when receiving the light beam from the reflector 06; It also contains electrical elements connected by circuits for many different purposes, such as maintaining constant light emission.

Additionally, the circuit shown in FIG. 7 can be used as a hand-operated master when operating the light source of the present invention is desired to provide the type and range of illumination or photocurable light power that can be produced. Switch】88 included. The switch 188
is preferably mounted at a position remote from the housing 8, for example at the terminal end of the arm yoke 10 disposed on the U-shaped member J2, or vice versa. The switch housing also includes a dual-acting manual switch with an arm coupled therein. A circuit breaker isolation switch 192 is located at the bonnet or suction end of the arm and is included in each power line through the switch member 190. Additionally, a ground wire 194 is provided.

As a further safety precaution when operating the turntape/l/64, referring to FIG. 90° in direction
When rotated, either coming roller 164 is connected to the stop or spring actuated in FIG. 3 to prevent further rotation, such as when filter 126 is placed adjacent lamp 106. Junction point adjacent to the positioning ball check device 196] 98 is fixed to the turn tape) v64 and contacts the stop member 196 on the base plate 28, when the filter 130 is placed adjacent to the reflector of the lamp 106 It will be seen that more than one movement is obstructed. It will therefore be seen that turntable 64 moves 180°, consisting of two movements of 90° each.

From the foregoing, it is clear that the present invention provides a compact and highly effective dental treatment light source in which at least three different types of illumination and one type of photocuring light power can be emitted in dental treatment with respect to a dental target. You will find that it is provided. These types of illumination and photocurable light power include ordinary white light without hue for general dental observation, enhanced white light with a higher color temperature for shade matches and functional comparisons, and photocurable planutics. non-curing illumination for use in observing it except for activating it, and photocuring light power intended for activating the photocurable glasstic. Because of its compact design, the structure occupies a relatively small base in the dental treatment room compared to the three to four separate light sources that provide the three types of illumination and one type of photocurable light power mentioned above. I don't have to listen.

Due to the advanced circuit design, tungnut halogen lamps with radiant reflectors are guaranteed to have a very long lifespan, even in environments where the current to the lamp is frequently turned on and off, and all Different optical functions are protected from power line voltage fluctuations to emit constant light emitted from the lamp. All the various beam modification structures are compactly housed within the nuveine where they are well protected and the columnarization of the beam directed from the front window panel is considerably protected. Preferably, the housing or casing adjustably attached to the distal end of the support marm is adaptable to various types of mounts available for use in dental clinics. Two manually operated handles are provided extending from the housing for manual pivoting positioning of the housing with respect to the patient. A very safe means is provided for the light curing function.

15A, 15B, ] 5C, another example illustration is shown. Different turntable arrangements are then utilized to provide different combinations of selective light modes, ie shapes of light emission. The turntable can be rotated in the manner described above to provide different combinations of light emission according to the elements brought into the optical path of the light source at each turntable position.

FIG. 15A shows the turntable positioned to produce three beams of general illumination and the light pipes emitted as transmitted illumination of a small target area. In this arrangement, the potentiometers 150 (FIG. 3) each have approximately 28
64", 3009" or 3075", for example, by a function of the bulb providing voltage regulation of 32.35 or 38 volts. Reflector 230128
2 is a spherical reflector 24 that provides two convergent beams.
4. Parallel light source 20 towards and from 246
It is installed for the reflected light from 6. Furthermore, the support part 23
6 is a groove or a reflector 230 as shown in FIG.
It includes a window 237 located directly below 232. This groove allows some of the light from light source 206 to pass directly over the center of the turntable. Many of the light rays pass through a focusing lens 245 which is held in place by a support 247 having a window 248. The lens and window are arranged to direct a central ray of light so that it essentially meets two convergent sub-rays at a predetermined distance. Also shown in FIG. 15 is a light pipe 2780 input end 270 with an input end 271 positioned to collect axes that deviate slightly from the central beam. Lamp 106 creates an essentially applanation-stopping beam, but since some lights are necessarily off-axis, tip 27J is placed no more than 1c off-axis from the center beam. Referring to Figure 16, the light pipe is mechanically connected to cover 274 through a ring or collar 275, the main portion of the light pipe being combustible, allowing the dentist to position the discharge end at any desired target location. It is long enough to allow 280 points. The input end substantially collects the axial rays away from the center ray as the majority collimated portion of the ray passes through window 248.

The light pipe 278 is thus configured such that, for example, the operator can additionally direct light pipe extrusion to transparentize intraoral tissue, such as teeth, or Provides the ability to capture off-axis light in a central ray that may be used as high-intensity spot lighting, as in

Figure 158 VC turned tape /l/ rotated to another position so as to provide only light curing light to the light curing means.
264 is shown. For purposes of this patent application, the lamp is preferably operated at 47 volts, corresponding to a lamp temperature of about 3254". Collimated light from light source 206 is focused and directed into tip 270 of light pipe 278. , providing enhanced light for light curing of fillers.

A light focusing means particularly suitable for this patent application is an aspherical lens 250.
and a biconvex lens 256.

This combination provides a very short focal length focusing means for, for example, a piece of collimated light and directing it to the tip 27 of the light pipe receiver 270. Approximately 400-500n
A bandpass filter that passes visible light in the range m is attached between the aspheric lens 250 and the biconvex lens 256. Furthermore, the shield 25 is configured so that the light from the aspherical lens is reflected by a mirror 244.
or 246 to ensure that no light is directed from those mirrors to the patient. Any straight forward light is blocked by the rear mirror support 26. In this way, high intensity curing light is used through the light pipe while the patient is protected from any other light beams directed at the face. As shown in FIG. 16, the light pipe 278 is combustible for directing the emitting end 280 to any desired target, such as a photocurable filling placed within a patient's tooth. Can be adjusted by the operator.

A third position of the turntable is shown in FIG. 150 for the two focused beams reflected from mirrors 244,246. The light beam is additionally filtered by a color correction filter 260 for shade matching purposes. The filter 260 is shown in a position immediately in front of the light source 206 and, as discussed above with respect to the embodiment of FIG. It is designed to improve the source light spectrum from the emissive reflector to meet the desired radio frequency index of 90 or higher for the desired fit of a new artificial tooth or tooth surface to the tooth. Mirrors 262, 263 are also rotated into position to reflect light straying from mirrors 244 and 246, thereby creating two focused lights for shade matching.

Since there is no window in the support 261, there is no straight light beam and no light passes through the light pipe tip 270. As per the present patent application, the lamp is operated at a voltage of about 41 volts, corresponding to a lamp temperature of about 8175'.

[Brief explanation of drawings]

FIG. 1 is a front view from the side of a dental control light embodying the main part of the invention, with a support arm fragmented at the top. FIG. 2 is a front view of the light shown in FIG. FIG. 3 is a cross section of the lights of FIGS. 1 and 2 taken from line 3--3 of FIG. 2, and is to a larger scale than FIG. J, 2. Figures 4-6 are partial plan views of the three main operating parts of the light, each of which functions to create a variety of illumination for dental applications. FIG. 7 is a wiring diagram of the electrical circuit portion of the light for creating and regulating illumination. FIG. 8 is a fragmentary view of the closure for the light illumination opening in the front of the window of the housing, the open position being shown in solid lines;
The closed position is indicated by a silhouette. FIG. 9 is a front view of the base plate part of the light housing shown in FIGS. 1 to 3, viewed from the side. FIG. 10 is a detailed cross-sectional view of the rotatable assembly within the housing of the light in FIGS. 1-3. FIG. 11 is a partial plan view from the side showing the supplemental cuffed cone of the present invention separated from the main body cone in solid lines and the connecting portion shown in dotted lines. FIG. 12 is a partially modified side view of the cone shown in FIG. 1. FIG. 13 is a partial view taken along line 18-13 of FIG. FIG. 14 is a partial side view of the cone shown in FIG. 11 that is further modified. FIG. 15A is a plan view of the turntable and light pipe of the present invention. FIG. 15B is a diagram showing the turntable of FIG. 15A rotated to emit photocuring light. FIG. 150 is a diagram showing a state in which the turntable is rotated to a position where light rays are filtered by a color correction filter. FIG. 6 is a side view of the optical device according to the present invention. Fig, 9 Fig, 138180 Engraving of the calyx surface (change in content!!) Engraving of the ivy drawing (no change in content) Engraving of β drawing (no change in the content) Procedural amendment (method) Indication of 1 case Patent Application No. 281966 filed in 1981 2 Name of the invention Multi-functional dental treatment light source 3 Relationship to the case of corrector Patent applicant address 70 West College Avenue, York, Pennsylvania, United States 17405 Name Name Dentsply International Inc. Representative Person: Edward Jehanson Jr. Nationality: United States of America 4 Agent Address: E540 Address: 3-57-6, Kyobashi, Higashi-ku, Osaka-shi, Osaka Prefecture Subject of amendment Description and drawings 7 Contents of amendment Description: Typed copy of the description originally attached to the application Engraving, as shown in the attached sheet (no changes to the content) Drawing: A clear drawing of Figures 15 and 16 on appropriate paper using a papermaking method, as shown in the attached sheet

Claims (1)

[Scope of Claims] (1) A beam means for directing at least one beam mode of light from a light source, and a light pipe means for concentrating the light from the light source and directing the light to a fixed target; an operationally selectable light delivery means for delivering light to a target by selecting one of a number of delivery modes; An optical device having a light source that generates light in a direction substantially along one axis, including selection means for delivering said mode of light. (2) The beam means further comprises means for generating a plurality of light beams, and the selection means comprises means for selecting a combination of the beams to be directed to the target. Optical device described in section. (3) further comprising an operationally selectable filter means for filtering light in a selected wavelength range from the light generated by the light source, the selection means further activating the filter means at the wavelength; 2. An optical device according to claim 1, further comprising means for selecting a wavelength range. (4) said beam means directing a center beam substantially along said source axis and directing at least one other beam at an angle from said axis and at a point at a fixed distance in front of said light source; 3. An optical device according to claim 2, including means for focusing light on said axis. 5. Claim 1, wherein said light pipe comprises a light pipe having concentrating means for concentrating light along said axial path and an input positioned to collect said concentrated light. The optical device described. (6) An optical device according to claim 5, which has a bandpass filter in which the light source is positioned between the condensing means, and the condensing means comprises an aspherical lens and a biconvex lens. 7. An optical device according to claim 5, wherein said light condensing means has a focal length of about 1c+++. (8) The optical device according to claim 1, wherein the optical device is a dental treatment device and further comprises a selectable filter means for filtering and shade matching the light generated by the light source. 9. An optical device according to claim 1, wherein said device is operated in combination with optical pipe means in a dental treatment apparatus and includes a visible band filter for directing curing light into said light pipe means. Cl0) having a single beam of light that produces substantially parallel light directed along an axis, directed at an angle from said axis and focused on said axis at a fixed distance in front of said light source; 6 operationally selectable beam means for producing from the light source a plurality of beams of light including at least one beam and a center beam directed substantially along said axis; an operatively selectable filter means for filtering selected wavelength ranges from the light; an operably selectable focusing means for focusing the focused light along said axial path; an optical device O comprising operationally selectable light pipe means for directing it to a desired location; and selection means for operationally selecting a desired combination of said light beam, wavelength range and focusing means. (]]) optical focusing means having a single light source producing substantially parallel light directed along an axis and for focusing the light along the path of said axis; and a light pipe means for collecting and transmitting said concentrated light to a selected location. (2) Selectable positioning means for positioning the optical concentrating means in one of a number of positions for concentrating light along said axis.
Apparatus described in section. (J3) being operatively positioned by said positioning means to produce multiple beams of light from a light source, provided that said beams include at least one beam at an angle from said axis and another beam along said axis; 13. The apparatus of claim 12 in combination with beam means comprising a beam: (4) a filter operatively positioned by said positioning means for filtering a selected range of wavelengths from said light; 13. The apparatus of claim 12 further comprising: (5) a light source for generating light directed substantially along an axis, the apparatus comprising: a plurality of selectable light beams from said light source; a plurality of beam generating means for generating a plurality of beams; a filter means for filtering a selected range of wavelengths of light passing therethrough; and a filter means for filtering said plurality of beams to obtain a desired combination of wavelength ranges. A dental treatment optical system including selection means for operationally selecting and positioning a plurality of beam means; (16) producing light directed substantially along an axis from a single light source, each beam having a different selecting one or more light output forms of a group consisting of a number of beam groups (a) directed at an angle and a concentrated light beam (l) from a light pipe, and directing the dental target in the form of the selected light output A method of applying a selected form of light to a dental target comprising directing the light to a dental target. (17) A patent further comprising selecting a desired wavelength capacity and filtering the selected form of light according to the selected wavelength capacity. Method O according to claim 16 (8) a collimated light source, a selectable filter means for providing a plurality of respectively selectable filter systems, and selecting a desired one of said filter systems and combining said light source with it. A multimode optical device for delivering selectable modes of light comprising selection means operated to produce collimated light of a combination of selected wavelengths. (19) The selection means includes a turntable; 19. The apparatus of claim 18, wherein means is located on the turntable. (20) remote from the turntable and in position for modifying at least some of the light from the light source. 20. The apparatus according to claim 19, characterized in that the second filter means is provided. 19. The device according to claim 18, further comprising selectable separate filters for exclusion.C';! 2) The apparatus of claim 18 further comprising voltage control means for applying a controlled voltage to the light source. 12B) The apparatus of claim 18, wherein the voltage control means is adjustable to operate the light source at a light temperature of about 3300'' in the shade match basin. 18. The device of claim 17, wherein the device is adjustable to operate the light source at a light temperature of between 3000'' and 3200''.